package com.nowcoder.community.util;

import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class CookieUtil {
    public static String getValue(HttpServletRequest request,String name){
        if(request==null || name==null){
            throw new IllegalArgumentException("参数为空！");

        }
        Cookie[] cookies= request.getCookies();
        if(cookies!=null)
        {
            for(Cookie cookie:cookies){
            if(cookie.getName().equals(name)){
                return cookie.getValue();
            }
        }

        }
        return null;
    }
}
